Use a small paint brush to reach through thehole in the liner and brush away any debris that might have collected on top of the bulkhead flange.
Installing pond liner bottom drain.
Before installing a pond liner pack some dirt into any voids to create a nice smooth backing for the liner.
An alternative to installing bottom drains is to remove the fish from the pond drain it wash the pond put clean water and then place back the fish to the pond.
It is very important to make sure you have enough liner around all the sides of your pond before you cut the drain in.
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Place liner in pond.
Reach in to make sure both the liner and sump are both clean and dry with a rag.
Rectangular box welded pond liner insert flexible 168 00.
An x cut is made over the sump of the drain.
Pond bottom drains simply push dirty pond water to the filter and push it back into the pond once it is clean.
Make sure liner is properly aligned so that the liner extends over all the outer edges of the pond then cut a 2 inch hole in the liner over the bottom drain opening only.